Lamp



FIG. 1 is a perspective view of a lamp of the present design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a rear elevation view thereof;

FIG. 6 is a right side view thereof; and,

FIG. 7 is a left side view thereof.

The ornamental design for a lamp, as shown and described.